When the Patient with Hypoparathyroidism Complains of Fatigue and a Lack

When the patient with hypoparathyroidism complains of fatigue and a lack of energy,the nurse is aware that:

A) Hypertension is the cause of the fatigue.
B) Hypocalcemia has caused decreased cardiac output.
C) Dyspnea has sapped the patient's energy.
D) Poor muscle tone makes any activity tiring.